Each application has a cache of temporary files that may be taking up memory. Try clearing the application cache from your larger applications to free up space. Continue to clear the cache on the rest of your apps. You may not be able to clear the cache for every application. Rarely, an application may not function as expected afterward.

Try clearing your application cache first and test to see if that resolves your issue.

If you clear the application cache, you don't remove your personal settings or information.

If you clear the application data, you remove your personal settings and info such as login information and high scores.

A complete application uninstall removes all related files, settings, and data from your HTC EVO Shift 4G. After the uninstall, reinstall it to try to fix any download errors and to be sure you have the latest software version of the application.